<template>
  <div>
    <div style="margin: 10px 0">
      <el-input style="width: 200px" placeholder="请输入名称" suffix-icon="el-icon-search" v-model="name"></el-input>
      <el-button style="margin-left: 5px;" type="primary" @click="load">搜索</el-button>
      <el-button type="warning" @click="reset">重置</el-button>
    </div>
    <div style="margin: 10px 0">
      <el-upload action="http://localhost:9090/file/upload" multiple :show-file-list="false" :on-success="handleFileUploadSuccess" style="display: inline-block">
        <el-button type="primary" style="margin-left: 5px;">上传文件 <i class="el-icon-top"></i></el-button>
      </el-upload>
      <el-popconfirm style="margin-left: 5px;" confirm-button-text='确定' cancel-button-text='我再想想' icon="el-icon-info" icon-color="red" title="您确定批量删除这些数据吗？" @confirm="delBatch">
        <el-button type="danger" slot="reference">批量删除 <i class="el-icon-remove-outline"></i></el-button>
      </el-popconfirm>

    </div>
    <el-table :data="tableData" border stripe :header-cell-class-name="'headerBg'" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55 " align="center"></el-table-column>
      <el-table-column prop="id" label="ID" width="80" align="center"></el-table-column>
      <el-table-column prop="name" label="文件名称" align="center"></el-table-column>
      <el-table-column prop="type" label="文件类型" align="center"></el-table-column>
      <el-table-column prop="size" label="文件大小(kb)" align="center"></el-table-column>
      <el-table-column label="预览" align="center">
        <template slot-scope="scope">
          <!-- <el-button type="primary" @click="preview(scope.row.url)">预览</el-button> -->
          <img :src="scope.row.url" alt="" class="img">
        </template>
      </el-table-column>
      <el-table-column label="下载" align="center">
        <template slot-scope="scope">
          <el-button type="primary" @click="download(scope.row.url)">下载</el-button>

        </template>
      </el-table-column>
      <el-table-column label="启用" align="center">
        <template slot-scope="scope">
          <el-switch v-model="scope.row.enable" active-color="#13ce66" inactive-color="#ccc" @change="changeEnable(scope.row)"></el-switch>
        </template>
      </el-table-column>
      <el-table-column label="操作" width="200" align="center">
        <template slot-scope="scope">
          <el-popconfirm style="margin-left: 5px;" confirm-button-text='确定' cancel-button-text='我再想想' icon="el-icon-info" icon-color="red" title="您确定删除吗？" @confirm="del(scope.row.id)">
            <el-button type="danger" slot="reference">删除 <i class="el-icon-remove-outline"></i></el-button>
          </el-popconfirm>
        </template>
      </el-table-column>
    </el-table>

    <div style="padding: 10px 0">
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="pageNum" :page-sizes="[2, 5, 10, 20]" :page-size="pageSize" layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>
    </div>

  </div>
</template>

<script>
export default {
  name: "File",
  data () {
    return {
      tableData: [],
      name: '',
      multipleSelection: [],
      pageNum: 1,
      pageSize: 10,
      total: 0,
      img: []
    }
  },
  created () {
    this.load()
  },
  methods: {
    load () {
      this.request.get("/file/page", {
        params: {
          pageNum: this.pageNum,
          pageSize: this.pageSize,
          name: this.name,
        }
      }).then(res => {
        this.tableData = res.data.records
        this.total = res.data.total
      })
    },
    changeEnable (row) {
      this.request.post("/file/update", row).then(res => {
        if (res.code === '200') {
          this.$message.success("操作成功")
        }
      })
    },
    del (id) {
      this.request.delete("/file/" + id).then(res => {
        if (res.code === '200') {
          this.$message.success("删除成功")
          this.load()
        } else {
          this.$message.error("删除失败")
        }
      })
    },
    handleSelectionChange (val) {
      console.log(val)
      this.multipleSelection = val
    },
    delBatch () {
      let ids = this.multipleSelection.map(v => v.id)  // [{}, {}, {}] => [1,2,3]
      if (ids.length == '') {
        return alert("请先选择需要删除的照片")
      }
      this.request.post("/file/del/batch", ids).then(res => {
        console.log(ids);
        if (res.code === '200') {
          this.$message.success("批量删除成功")
          this.load()
        } else {
          this.$message.error("批量删除失败")
        }
      })
    },
    reset () {
      this.name = ""
      this.load()
    },
    handleSizeChange (pageSize) {
      console.log(pageSize)
      this.pageSize = pageSize
      this.load()
    },
    handleCurrentChange (pageNum) {
      console.log(pageNum)
      this.pageNum = pageNum
      this.load()
    },
    handleFileUploadSuccess (res) {
      console.log(res)
      this.load()
    },
    download (url) {
      window.open(url)
    },
    preview (url) {
      // window.open('https://file.keking.cn/onlinePreview?url=' + encodeURIComponent(window.btoa((url))))
      window.open(url)
      this.openLoading()
      this.img = url
      console.log(this.img);
    },

  }
}
</script>

<style scoped >
.img {
  width: 50px;
  height: 50px;
}
</style>